Mechanoassisted Synthesis of Sulfonated Covalent Organic Frameworks with High Intrinsic Proton Conductivity

Yongwu Peng; Guodong Xu; Zhigang Hu; Youdong Cheng; Chenglong Chi; Daqiang Yuan; Hansong Cheng; Dan Zhao

doi:10.1021/acsami.6b06189

Mechanoassisted Synthesis of Sulfonated Covalent Organic Frameworks with High Intrinsic Proton Conductivity

Yongwu Peng
, Guodong Xu
, Zhigang Hu
, Youdong Cheng
, Chenglong Chi
, Daqiang Yuan
, Hansong Cheng^*
, Dan Zhao

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

384 Scopus citations

Abstract

It is challenging to introduce pendent sulfonic acid groups into modularly built crystalline porous frameworks for intrinsic proton conduction. Herein, we report the mechanoassisted synthesis of two sulfonated covalent organic frameworks (COFs) possessing one-dimensional nanoporous channels decorated with pendent sulfonic acid groups. These COFs exhibit high intrinsic proton conductivity as high as 3.96 × 10^-2 S cm^-1 with long-term stability at ambient temperature and 97% relative humidity (RH). In addition, they were blended with nonconductive polyvinylidene fluoride (PVDF) affording a series of mixed-matrix membranes (MMMs) with proton conductivity up to 1.58 × 10^-2 S cm^-1 and low activation energy of 0.21 eV suggesting the Grotthuss mechanism for proton conduction. Our study has demonstrated the high intrinsic proton conductivity of COFs shedding lights on their wide applications in proton exchange membranes.

Original language	English
Pages (from-to)	18505-18512
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	8
Issue number	28
DOIs	https://doi.org/10.1021/acsami.6b06189
State	Published - 20 Jul 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

Keywords

covalent organic frameworks
mechanoassisted synthesis
mixed matrix membranes
proton conductivity
proton exchange membranes

ASJC Scopus subject areas

General Materials Science

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10.1021/acsami.6b06189

Cite this

@article{d580377fb5c94fd992fdaffbf6d20819,

title = "Mechanoassisted Synthesis of Sulfonated Covalent Organic Frameworks with High Intrinsic Proton Conductivity",

abstract = "It is challenging to introduce pendent sulfonic acid groups into modularly built crystalline porous frameworks for intrinsic proton conduction. Herein, we report the mechanoassisted synthesis of two sulfonated covalent organic frameworks (COFs) possessing one-dimensional nanoporous channels decorated with pendent sulfonic acid groups. These COFs exhibit high intrinsic proton conductivity as high as 3.96 {\texttimes} 10-2 S cm-1 with long-term stability at ambient temperature and 97\% relative humidity (RH). In addition, they were blended with nonconductive polyvinylidene fluoride (PVDF) affording a series of mixed-matrix membranes (MMMs) with proton conductivity up to 1.58 {\texttimes} 10-2 S cm-1 and low activation energy of 0.21 eV suggesting the Grotthuss mechanism for proton conduction. Our study has demonstrated the high intrinsic proton conductivity of COFs shedding lights on their wide applications in proton exchange membranes.",

keywords = "covalent organic frameworks, mechanoassisted synthesis, mixed matrix membranes, proton conductivity, proton exchange membranes",

author = "Yongwu Peng and Guodong Xu and Zhigang Hu and Youdong Cheng and Chenglong Chi and Daqiang Yuan and Hansong Cheng and Dan Zhao",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

month = jul,

day = "20",

doi = "10.1021/acsami.6b06189",

language = "English",

volume = "8",

pages = "18505--18512",

journal = "ACS Applied Materials and Interfaces",

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TY - JOUR

T1 - Mechanoassisted Synthesis of Sulfonated Covalent Organic Frameworks with High Intrinsic Proton Conductivity

AU - Peng, Yongwu

AU - Xu, Guodong

AU - Hu, Zhigang

AU - Cheng, Youdong

AU - Chi, Chenglong

AU - Yuan, Daqiang

AU - Cheng, Hansong

AU - Zhao, Dan

PY - 2016/7/20

Y1 - 2016/7/20

N2 - It is challenging to introduce pendent sulfonic acid groups into modularly built crystalline porous frameworks for intrinsic proton conduction. Herein, we report the mechanoassisted synthesis of two sulfonated covalent organic frameworks (COFs) possessing one-dimensional nanoporous channels decorated with pendent sulfonic acid groups. These COFs exhibit high intrinsic proton conductivity as high as 3.96 × 10-2 S cm-1 with long-term stability at ambient temperature and 97% relative humidity (RH). In addition, they were blended with nonconductive polyvinylidene fluoride (PVDF) affording a series of mixed-matrix membranes (MMMs) with proton conductivity up to 1.58 × 10-2 S cm-1 and low activation energy of 0.21 eV suggesting the Grotthuss mechanism for proton conduction. Our study has demonstrated the high intrinsic proton conductivity of COFs shedding lights on their wide applications in proton exchange membranes.

AB - It is challenging to introduce pendent sulfonic acid groups into modularly built crystalline porous frameworks for intrinsic proton conduction. Herein, we report the mechanoassisted synthesis of two sulfonated covalent organic frameworks (COFs) possessing one-dimensional nanoporous channels decorated with pendent sulfonic acid groups. These COFs exhibit high intrinsic proton conductivity as high as 3.96 × 10-2 S cm-1 with long-term stability at ambient temperature and 97% relative humidity (RH). In addition, they were blended with nonconductive polyvinylidene fluoride (PVDF) affording a series of mixed-matrix membranes (MMMs) with proton conductivity up to 1.58 × 10-2 S cm-1 and low activation energy of 0.21 eV suggesting the Grotthuss mechanism for proton conduction. Our study has demonstrated the high intrinsic proton conductivity of COFs shedding lights on their wide applications in proton exchange membranes.

KW - covalent organic frameworks

KW - mechanoassisted synthesis

KW - mixed matrix membranes

KW - proton conductivity

KW - proton exchange membranes

UR - https://www.scopus.com/pages/publications/84979201630

U2 - 10.1021/acsami.6b06189

DO - 10.1021/acsami.6b06189

M3 - Article

AN - SCOPUS:84979201630

SN - 1944-8244

VL - 8

SP - 18505

EP - 18512

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 28

ER -

Mechanoassisted Synthesis of Sulfonated Covalent Organic Frameworks with High Intrinsic Proton Conductivity

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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